August sokdebegger and otto schsober



A. SONDER'EGGER & 0. SCHR'ODER.

V EHICLE SPRING! APPLICATION FILEDJUNE 17. 1914.

l ,1 93,625. Patented A11g.8, 1916.

AUGUST SONDEEEGGER Ann orro sonaonnn, or HAMBURG, -3ERMANY.

VEHICLE-SPRING.

Specification of Letters Patent.

Patented n s, fare.

Application filed .Tune 17, 1914. Serial No. 845,525.

the German Emperor, and resident of No.

22 Mittelweg, Hamburg 13, Germany, have invented certain new and usefulImprovements in or Relating to Vehicle-Springs, of which the followingis a specification.

.This invention relates to a vehicle spring more particularly adaptedfor use in automobiles and distinguished by the fact that neither boltsnor suspension links are provided. 'To this end the main leaf or limb ofthe spring at the two points-at which suspension links are usuallyarranged is formed into loops, its ends being then spirally bent inupward direction. The upper parts of the r main limb or leaf when thespring is arranged on the vehicle are drawn upward in oppositlon to thespring action and are then secured on the vehicle frame.

lVith these vehicle springs bolts and suspension links of the kindrequired in connection with the known springs are entirely obviatedsince the main leaf has its two ends directly connected to the vehicleframe without any intermediate parts. This has the advantage owing tothe absence of all frictional intermediate parts that the spring cannotsqueak or clatter and that it 'need not be lubricated. Owing to thetensioncaused by the attachment of the spring on the vehicle frame anexcellent shockless spring action is attained excluding rolling motionand jerking of the vehicle. A spring arrangement according to thisinvention is illustrated by way of example in the accompanying drawings,in which:

Figure 1 is a side elevation of a vehicle spring embodying ourinvention; Fig. 2 a similar View partly in sectiori, showing the springattached to a vehicle frame; Fig. 3 a side view of a modification; Fig.4: a longitudinal section of Fig. 3, and Fig. 5, a longitu-v dinalsection of a further modification.

According to Figs. 1 and 2, the spring comprises the main leaf or limb aand the auxiliary leaves I) held together by the collar 0. As shown themain leaf a, is formed into depending loops at al and is then spirallybent inv upward direction as indicated at e. The

upper limbs f of the main spring which are provided with reinforcingleaves ,9 are drawn up and are then fixed with their ends f to thevehicle frame 8 and prevented from breaking by bandages i (Fig. 2). Areinforcing band it is arranged in conjunction with each loop d.

According to Figs. 3 and 4, the main leaf a of the spring has its loopedportions so divided as to be composed of a central and two lateralparts. To this'e'nd the inner endsk of the lateral parts 6, f of themain spring are hook-shaped and the ends of the central part a areprovided with a thickeningl corresponding to the curvature of the hooksso as to be laterally inserted in the hooks 7c and thereby to form arigid frictionless joint surrounded by a divided cap 721. The halves ofthis cap firmly grip over the connecting parts 7v, Z and are connectedby screw bolts 'n. This constructional form has the advantage ofenabling the carriage spring to be readily mounted and individual partsthereof to be easily exchanged.

In Fig. 5 the ends of spring a are hookshaped as at ca to receive theprotuberances e of the spirals e.

hat we claim is I 1. A vehicle spring comprising a main leaf, dependingend loops on said leaf, spirals extending partly around the end loops,and upper limbs on the spirals, said upper limbs being adapted to besecured to the vehicle frame and having a tension opposite to that ofthe main leaf.

2. A vehicle spring comprising a main leaf, an upwardly extending spiralat the end of the leaf, one of said parts being provided with a hook,and the other part being provided with a knob engaging said hook. toform a sectional depending loop at the junction between main leaf andspiral.

Signed by us at Hamburg, Germany, this third day of June. 191%.

AUGUST SONDEREGGER. OTTO SCHRODER. \Vitnesses Arors'r lVnxK, Enxrs'r H.L. Mmnucxnorr.

